161116015647 has 8 divisors (see below), whose sum is σ = 217847007360. Its totient is φ = 105897850520.

The previous prime is 161116015601. The next prime is 161116015661. The reversal of 161116015647 is 746510611161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161116015647 - 2²³ = 161107627039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161116013647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378206397 + ... + 378206822.

It is an arithmetic number, because the mean of its divisors is an integer number (27230875920).

Almost surely, 2^161116015647 is an apocalyptic number.

161116015647 is a deficient number, since it is larger than the sum of its proper divisors (56730991713).

161116015647 is an equidigital number, since it uses as much as digits as its factorization.

161116015647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756413293.

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 161116015647 in words is "one hundred sixty-one billion, one hundred sixteen million, fifteen thousand, six hundred forty-seven".